📌 Product Overview
The XL-2835BGWC-02 is a surface-mount device (SMD) LED from XINGLIGHT, designed within a compact 2.8x3.5x0.8mm package. 💡 It features a green light emitter with a yellow diffused colloid, suitable for high-density integration in modern lighting assemblies. While primarily categorized under indoor and commercial lighting, its real design value lies in the balance between luminous intensity and thermal management. ✨ Engineers must focus not just on the 60mA drive current, but on how the Moisture Sensitivity Level (MSL 3) and reflow profiles impact long-term reliability in mass production.
🚀 Typical Applications
Based on its optical characteristics and robust 2835 form factor, this component is optimized for scenarios requiring efficient light distribution and reliability.
- Indoor Illumination: 💡 Ideal for fluorescent tubes, light strips, and downlights where consistent color rendering is key.
- Commercial Signage: ✨ High suitability for advertising characters and light boxes due to the 120-degree viewing angle.
- Backlighting: 📈 Provides stable illumination for LCD backlights in display panels.
- Decorative Lighting: 🎨 Compatible with flexible light strips for architectural or accent lighting effects.
📊 Key Technical Specifications
The table below outlines the critical optical and electrical parameters under standard test conditions (Ta=25°C).
| Parameter | Symbol | Min. | Typ. | Max. | Unit | Test Conditions |
|---|---|---|---|---|---|---|
| Luminous Intensity | Φ | 10 | — | 17 | LM | IF = 60mA |
| Forward Voltage | VF | 3.0 | — | 3.4 | V | IF = 60mA |
| Viewing Angle | 2θ1/2 | — | 120 | — | Deg | IF = 60mA |
| Reverse Current | Ir | — | — | 5 | μA | VR = 5V |
| Color Coordinates | x | — | 0.18 | — | — | IF = 60mA |
| y | — | 0.16 | — | — | IF = 60mA |
💡 Design Note: Bin codes (H7/H8 for brightness, N13-4/N13-5 for voltage) allow for tighter selection in specific designs.
🚨 Absolute Maximum Ratings & Process Limits
Exceeding these limits may cause permanent damage or failure. 👇 These values are critical for safety margin calculations.
| Parameter | Symbol | Value | Unit | Notes |
|---|---|---|---|---|
| Max Power Dissipation | PD | 200 | mW | @ Ta=25°C |
| Max Forward Current | IF | 60 | mA | Continuous DC |
| Peak Forward Current | IFP | 150 | mA | Pulse width ≤0.1ms, Duty ≤1/10 |
| Max Reverse Voltage | VR | 5 | V | |
| ESD Ability | ESD | 2000 | V | Human Body Model (HBM) |
| Operating Temp. | TOPR | -40 ~ +85 | °C | |
| Storage Temp. | TSTR | -40 ~ +85 | °C |
🔒 Critical Warning: The soldering temperature must not exceed 260°C for longer than 6 seconds to prevent package delamination.
📦 Package, Dimensions & Assembly Notes
This component utilizes the standard 2835 footprint (2.8x3.5x0.8mm), which is industry-standard for automated assembly.
- Dimensions: The compact 0.8mm height profile allows for slim lighting fixtures.
- MSL Level: ⚠️ Rated as MSL 3. Components must be baked and mounted within 168 hours (floor life) of opening the vacuum-sealed bag to prevent "popcorning" during reflow.
- Soldering: Designed for infrared reflow processes. Ensure the profile complies with the "Lead-free process" mentioned in the datasheet (Peak 255°C) for optimal wetting.
- Packaging: EIA standard compliant for seamless SMT pick-and-place automation.
🤝 Sourcing & Supply Considerations
To ensure design integrity and supply chain stability, consider the following factors when procuring the XL-2835BGWC-02.
- Bin Consistency: Verify that the supplier can provide consistent bins (H7/H8) across batches to avoid color or brightness variations in the final product.
- Authenticity: Source strictly through authorized channels to guarantee ROHS compliance and the 2000V ESD protection rating.
- Sample Evaluation: ✨ Request samples from the specific production batch before mass production to verify the "Yellow Diffused" colloid compatibility with your light guide design.
- Technical Support: Engage with XINGLIGHT engineers for detailed reliability test data (MIL-STD-750D) if your application involves harsh environments.
❓ Frequently Asked Questions
Q: What is the forward voltage range I should design my driver for?
A: You should design your driver circuit to accommodate a forward voltage (VF) range of 3.0V to 3.4V. The bin codes N13-4 (3.0-3.2V) and N13-5 (3.2-3.4V) indicate the specific sub-ranges within this window. Always design for the maximum voltage to ensure current regulation remains stable.
Q: Can this LED be used in high-humidity outdoor environments?
A: The datasheet specifies an operating temperature range of -40°C to +85°C and compliance with humidity storage tests. However, for outdoor use, it is strictly dependent on the IP rating of the final fixture. The LED itself is not waterproof; it requires an enclosure with appropriate conformal coating or sealing.
Q: What precautions must I take given the MSL 3 rating?
A: MSL 3 means the component is sensitive to moisture. If the vacuum bag has been open for more than 168 hours, you must bake the LEDs at 125°C for 24 hours before reflow soldering to prevent internal moisture from expanding and cracking the package during the high-temperature reflow process.
Q: What is the difference between the H7 and H8 brightness codes?
A: These codes refer to the Luminous Intensity bins. H7 covers 10-13 Lumens, while H8 covers 13-17 Lumens (at 60mA). Selecting a specific bin allows you to ensure uniform brightness across a light strip or display panel.
Q: Is this LED compatible with lead-free soldering processes?
A: Yes, the datasheet explicitly provides a profile for a "Lead-free process" with a peak temperature of 255°C +0/-5°C. Ensure your reflow oven profile does not exceed this limit or the recommended time above 217°C (60-120 seconds) to avoid damaging the die attach.
